it's their environment. the purpose of this "new york times" article and my book "the blue zones," was really to look at the environmental components that explain longevity. >> so, dan, one of the things that fascinated me in this article, this one man in his 60s, living in america, diagnosed with cancer, given nine months to live. he moves home to ikaria and he's feeling better, working in his garden. it's 30 years later, the end of the story is he comes back to talk to the u.s. to talk to his doctors to say what do you think happened to the cancer and his doctors have passed away. it's an amazing story and anecdote but what is it specifically about the lifestyle and diet there that helps treat and prevent cancer? >> well, i think it's probably the diet. it's a very clean environment. it's not only what they eat, it's how they eat. they're not eating standing up or on the run. they tend to eat with their family. it's slow. they're overlooking the aegean. i think also if you look at their terrain, there's no